Public bug reported:
Ubuntu 9.04
dbus 1.2.12-0ubuntu2
We're on x86_64, but this is really arch independent
On a multiuser system with many desktop users, the system dbus-daemon
process can easily exceed the 1024 open files allowed by the default
ulimit. When it exceeds that, it goes into a tight loop, sucking up 100%
processor, and nobody can log in. And, of course, everything using dbus
is then adversely affected. Nothing in the logs points to too many open
files as being the problem. Only attaching strace to the processes
clarified what was happening. This is bad for thin client people. e.g.
Edubuntu users and corporate desktop rollouts.
As an example, I have a corporate server running 58 gnome desktops via
XDMCP and dbus-daemon has about 1200 files open.
Increasing the default "ulimit -n" setting for user 'messagebus' or
including a higher "ulimit -n" in the sysvinit file solves the problem.
Other than that, Ubuntu has done wonderfully compared to the Fedora that
we just upgraded from. I'm most pleased with your excellent work.
** Affects: dbus (Ubuntu)
Importance: Undecided
Status: New
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dbus needs more than the default 1024 open files
https://bugs.launchpad.net/bugs/381063
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